The following lines can type the text content of the clipboard using the keyboard. The process starts 2 seconds after starting the script and delays each keystroke by 3 milliseconds, which can of course be customized.

Start-Sleep -Seconds 1;
foreach ($line in Get-Clipboard)
{
    foreach ($char in [char[]]$line)
    {
        if ($char -match "[\+\^\%\~\(\)\{\}\[\]]")
        {
            [string]$char = "{$char}";
 
        } # if ($char -match "...
 
        [System.Windows.Forms.SendKeys]::SendWait($char);
        if($Milliseconds -gt 0)
        {
            Start-Sleep -Milliseconds $Milliseconds;
        }
    }             
    [System.Windows.Forms.SendKeys]::SendWait("{ENTER}");
}